12x^2-27x+5=0

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Solution for 12x^2-27x+5=0 equation:


Simplifying
12x2 + -27x + 5 = 0

Reorder the terms:
5 + -27x + 12x2 = 0

Solving
5 + -27x + 12x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
12 the coefficient of the squared term: 

Divide each side by '12'.
0.4166666667 + -2.25x + x2 = 0

Move the constant term to the right:

Add '-0.4166666667' to each side of the equation.
0.4166666667 + -2.25x + -0.4166666667 + x2 = 0 + -0.4166666667

Reorder the terms:
0.4166666667 + -0.4166666667 + -2.25x + x2 = 0 + -0.4166666667

Combine like terms: 0.4166666667 + -0.4166666667 = 0.0000000000
0.0000000000 + -2.25x + x2 = 0 + -0.4166666667
-2.25x + x2 = 0 + -0.4166666667

Combine like terms: 0 + -0.4166666667 = -0.4166666667
-2.25x + x2 = -0.4166666667

The x term is -2.25x.  Take half its coefficient (-1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
-2.25x + 1.265625 + x2 = -0.4166666667 + 1.265625

Reorder the terms:
1.265625 + -2.25x + x2 = -0.4166666667 + 1.265625

Combine like terms: -0.4166666667 + 1.265625 = 0.8489583333
1.265625 + -2.25x + x2 = 0.8489583333

Factor a perfect square on the left side:
(x + -1.125)(x + -1.125) = 0.8489583333

Calculate the square root of the right side: 0.921389349

Break this problem into two subproblems by setting 
(x + -1.125) equal to 0.921389349 and -0.921389349.

Subproblem 1

x + -1.125 = 0.921389349 Simplifying x + -1.125 = 0.921389349 Reorder the terms: -1.125 + x = 0.921389349 Solving -1.125 + x = 0.921389349 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.125' to each side of the equation. -1.125 + 1.125 + x = 0.921389349 + 1.125 Combine like terms: -1.125 + 1.125 = 0.000 0.000 + x = 0.921389349 + 1.125 x = 0.921389349 + 1.125 Combine like terms: 0.921389349 + 1.125 = 2.046389349 x = 2.046389349 Simplifying x = 2.046389349

Subproblem 2

x + -1.125 = -0.921389349 Simplifying x + -1.125 = -0.921389349 Reorder the terms: -1.125 + x = -0.921389349 Solving -1.125 + x = -0.921389349 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.125' to each side of the equation. -1.125 + 1.125 + x = -0.921389349 + 1.125 Combine like terms: -1.125 + 1.125 = 0.000 0.000 + x = -0.921389349 + 1.125 x = -0.921389349 + 1.125 Combine like terms: -0.921389349 + 1.125 = 0.203610651 x = 0.203610651 Simplifying x = 0.203610651

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.046389349, 0.203610651}

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